Wrench.



No. 759,715. PATENTBD MAY 10, 1904.

Gr. W. JESSUP, JR.

WRENCH.

APPLIATION FILED NOV. 1l, 1903.

N0 MODEL.

mmmml l UNITED STATES Patented May 10, 1904.

PATENT GEEICE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 759,715, dated May l0,1904. Application filed November ll, 1903. Serial No. 180,657. (Nomodel.)

T0 all whom, zit may concern:

Beitknown thatI, GEORGE W. JEssUr, J r., a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful lmprovem ents inWrenches, of which the following is a specification.

This invention relates to wrenches, and has for its object to provide asimple and eflicient construction whereof the jaws may be readilyadjusted toward or from each other, and after being adjusted to engagetwo opposite sides of a nut or other object the movement of the handlein one direction will cause the jaws to be held rigidly with relation toeach other for the purpose of turning the nut, and the movement of thehandle in the reverse direction will cause the jaws to beheld yieldinglywithrelation to each other, thereby permitting one jaw to move away fromthe other for the purpose of passing the jaws around the corners of thenut for their engagement with two of its other sides.

The invention consists in the novel construction and combination ofparts, which will be hereinafter fully described and claimed.

In the drawings, Figure 1 is a side elevation of my improved wrench.Fig. 2 is a view as seen at right angles to Fig. 1. Fig. 3 is a viewsimilar to Fig. 1, showing the parts in a different position. Fig. 4 isa longitudinal section, as on the line 4 4 of Fig. 2. Fig. 5 is atransverse section, as on the line 5 5 of Fig. 1. Fig. 6 is a transversesection, as on the line 6 6 of Fig. 1.

1 designates the stock, having formed on one end thereof the handle 2.Pivoted to the other end of the stock, as at 3, is a jaw 4, providedwith a shank 7, which embraces the stock 1 and extends toward the handle2. '.lhe free end of the shank has a slight movement toward and from thestock 1 when rocked upon the pivot 3.

Surrounding the shank 7 and stock 1 is a member 8, one end of which isprovided with a jaw 9. The member 8 is 'slidingly iitted to the shank 7and is longitudinally adjustable thereon. The other end of the member isprovided with a projection 10, between which and the jaw is mounted arotatable adj ustingscrew 11, provided with a knnrled head 12, by meansof which the screw 11 may be turned. Fitted to the threads of the screw11 is an adjustingnut 13, provided with a projection 14, which extendsbetween the sides of the member 8, and thereby prevents rotation of thenut whilethe screw is being turned.

The handle 2 is provided with a centrallyarranged longitudinal opening15, having therein a spring 16, one end of which bears against atransverse block 17, which extends through a slot 18 in the stock andtakes against one end of the mem ber 8. The pressure of the spring 16tends normally to act upon thc member 8 and force the'projection 14 ofthe adjusting-nut 13 into engagement with a notch 19 in the shank 7.Thus it will be seen that the normal position of the nut 13 is inengagement with the shank 7 and that by turning the screw 11, the member8, and perforce the jaw 9, may be moved toward or from the jaw 4, asdesired.

The stock 1 is provided with a notch 20, which is arranged to Abe movedinto or out of engagement with the projection 14 by moving the stock onthe pivot 3 when the projection 14 is in engagement with the notch 19 ofthe shank. The purpose of the notch 19 is to prevent the movement of thejaw 9 toward the jaw 4, and the purpose of the notch 2O is to preventthe movement of the jaw 9 away from the jaw 4. It will therefore be seenthat by moving the stock to disengage the notch 2() from the projection14 the jaw 9 may be moved away from the jaw 4 against the action of thespring 16, as shown in Fig. 3, and that by moving the stock to engagethe notch 2O with the projection 14 after the spring 16 has returned thejaw 9 to its normal position the jaws 4 and 9 will be held rigidly withrelation to each other, as shown in Fig. 1.

The operation of the wrench may be briefly described as follows: Thethumb-nut 11 is first turned to adjust the jaws 4 and 9 to [it two sidesof the nut. The handle 2 is then moved in the direction indicated by thearrow in Fig. 1, thereby engaging the notch 2O with the projection 14,and during the continued movement of the handle the jaws are held rig-IOO idly together and the nut is turned with the wrench. After the nuthas been given a partial turn the movement of the handle 2 is reversed.This operation moves the stock 1 on the pivot 3 to disengage the notch2O from the projection 14, and continuing the movement of the handle 2to turn the jaws around the corners of the nut the jaw 9 is therebyforced away from the jaw 4 against the action of the spring 16, as shownin Fig. 3. As the opposing faces of the jaws 4 and 9 are broughtparallel to two other sides of the nut, the spring 16 gradually returnsthe jaw 9 to its original position. After the jaw 9 reaches its normalposition the movement of the handle 2 may be again reversed to engagethe notch 2() with the projection 14 for a succeeding operation, and soon until the nut has been given the desired number of turns.

I claim- 1. In a wrench, the combination of the stock, a jaw pivotedthereto and provided with a shank, a second jaw slidingly tted to saidshank, means for engaging the second jaw with the stock and means foradjusting said means with respect to the second jaw, substantially asdescribed.

2. In a wrench, the combination oi' the stock, a jaw pivoted thereto andprovided with a shank, a second jaw slidingly fitted to said shank,means for engaging the second jaw with the stock, and a screw foradjusting said means with respect to the second jaw, substantially asdescribed.

3. In a wrench, the combination of the stock, a jaw pivoted thereto andprovided with a shank, a second jaw slidingly fitted to said shank,means for engaging the second jaw with the stock, a screw for adjustingsaid means with respect to the second jaw, and a spring tending to forcesaid jaws toward each other, substantially as described.

4. In a wrench, the combination of the stock, a jaw pivoted thereto andprovided with a shank, a second jaw slidingly fitted to said shank,means for engaging the second jaw with the stock, a spring tending toforce the second jaw toward the lirst jaw, means 'for limiting themovement of the jaws toward each other, and means for adjusting saidmeans, substantially as described.

5. In a wrench, the combination of the stock provided with a notch, ajaw pivoted to the stock and provided with a shank, a second jawslidingly fitted to the shank, a projection carried by the second jawand adapted to engage the notch, and means for adjusting the projection,substantially as described.

6. In a wrench, the combination of the stock provided with a notch, ajaw pivoted to the stock and provided with a shank, a second jawslidingly itted to the shank, a projection carried by the second jaw andadapted to engage the notch, means for adjusting the projection, and aspring tending to force said jaws together, substantially as described.

7. In a wrench, the combination of the stock provided with a notch, ajaw pivoted to the stock and provided with a shank, a second jawslidingly fitted to the shank, means carried by the second jaw forengaging the notch and shank, and a spring tending to force said jawstogether, substantially as described.

8. In a wrench, the combination of the stock provided with a notch, ajaw pivoted to the stock and provided with a shank, a second jawslidingly fitted to the shank, a screw connected to the second jaw, anda nut carried by the screw and adapted to engage said notch,substantially as described.

9. In a wrench, the combination of the stock provided with a notch, ajaw pivoted to the stock and provided with a shank, a second jawslidingly tted to the shank, a screw connected to the second jaw, a nutcarried by the screw and adapted to engage said notch and shank, and aspring tending to force the second jaw toward the rst jaw, substantiallyas described. In testimony whereof I ailix my signature in presence oftwo witnesses.

GEORGE W. JESSUP, JR. Witnesses:

ANDREW V. GROUPE, RALPH H. GAMBLF..

